Kanvar (Prince) Nau Nihal Singh (9 March 1821 – 6 November 1840) was a Sikh ruler of the sovereign country of Punjab and the Sikh Empire. He was the son of Maharani Chand Kaur and Maharaja Kharak Singh, himself the eldest son and heir of Maharaja Ranjit Singh Sher-e-Panjab and a grandson of Datar Kaur.